Other resources

  • Brent Ozar
    This guy provides one of the best packages for identifying and solving performance issues in your SQL Server.
    He also writes blogs on optimization and creates very easy-to-understand videos on the subject.
    You´ll find him here Brent Ozar.

  • Erik Darling
    Writes a lot of valuable content in his blog about optimizing SQL Server.
    He also has a package of SQL scripts that is a must-have for any DBA looking for a smoother workday.
    Check it out here Erik Darling.

Make sure to follow these guys, read and watch everything they produce.